Damper-regulator.



T. CONNELL.

DAMPER REGULATOR.

APPLICATION FILED NOV-30. 1917.

1,302,635. Patented Mz my 6, 1919.

Invenror By ATTYS.

rm: mums PETERS cc. PHOID-LITHQ. WASHING mm. a. c.

UNITED STATE s PATENT OFFICE.

THOMAS conNELL. or IOWA CITY, IOWA.

DAMPER-REGULATOR.

To all whom it may concern." 1

Be it known that I, THOMAS Comm, a citizen of the United States, and resident of Iowa City, in the county of Johnson and State of Iowa, haveinvented a certain new and useful Damper-Regulator", of which the following is a specification. 1

The object of my invention is: to provide a device adapted to be connected with .a steam heating plant for automatically regulating the check and draft doors of a furnace. 11

More particularly it is my object to pro vide a device of the type using a water reoeptacle adapted to be filled with water according to the pressure in the boiler and to be automatically connected With the check and draft doors or both.

Still a further object is to provide such a device in which the movable receptacle is operatively connected with a return water chamber so that in case there should be any defect or check in the return system; whereby the system should bemade inefiective on account of the failure of any proper return of the water, water will be supplied to the movable receptacle for thereby operating said receptacle. j

Still a further object is to provide such a device adapted to automatically close an air vent in the system when the receptacle is moved to certainpositions.

.Still a further object is to provide such a device having a receptacleof the kind mentioned and-having an air vent which device has means for automatically'closing the last mentioned air vent when the receptacle is lowered.

j T have thus provided in general a com- .bined water rece ver, and air separator and damper regulator controlled by boiler pressure or return water.

With these and other objects in view, my

invention consists in the construction, ar-

and illustrated in theaccompanying drawings,in which: M j p 1 1 shows a front elevation of a fur- Figure nace and part of a steam heating system and damper embodying my invent on.

Specification of Letters Patent.

13 also pivoted at its upper end. Mounted *on a suitable support 14 is a re- Fig. 2 shows a front elevation of the damper regulator attachment.

Fig. 3 shows aside elevation of the device shown in Fig.2, partsbeing broken away and parts being shown in section.

Fig. 4 shows a vertical, sectional view through the top of the tiltable water receptacle, illustrating part of the mechanism for closing the vent therein.

Fig. 5 shows a top view of the device.

In the accompanying drawings, I have used the reference numeral 10 to indicate generallya furnace having a heating boiler 11. The furnacehas a draft door 12 pivoted at its upper end, and a check draft door ceptacle 15. which may havethe form Iofa cylinder. A pipe 167 communicates with the upper portion of the boiler and extends to a position above the receptacle 15 and thence downwardly to theupper interior ofthe re- Patented May 6, 1919. Application filed November 30, 19 1?. Serial No. 204,7901 i Y ceptacle 15. Adjacent to the receptacle 15 is a second receptacle 16, the lower interior of which communicates wlth the lower interior of the. receptacle 15 by means of a the receptacle 16 by means of any suitable joint is a tube 20. Connected with the tube 20 outside the receptacle 16 is a tube 21, the free end of which supports and communicates with the lower portion of atiltable the other end of thetube 21 is arodi23 on the end of which is an adjustable weight 24:. Below the tube 20 a plate 25 is. centrally pivoted onthe wall of the receptacle 16. The ends of the plate 25 are provided with curved slots26. Pins or the like 27; secured to the -wall of the receptacle .16 extend 'throughthe slots 26 and limit the tilting movementof the plate 25.. The plate 25 is is designed. to engage the rod 23. 1 1

spring On the other bolt 29 is mounted a '30 adapted to engage the tube 21. It will be seenthat theutilting movementofthe rod 23 water receptacle 22. Ektending away from 1 provided" at its ends with lugs. 28 in which 1 :are mounted bolts 29. One of the bolts 29 and tube 21 and of the receptacle 22 is limited by the pins 27 in the slots 26 of the plate 25.

The receptacle 22 has in its upper por tion an air vent 31 formed around which is a valve seat 32.

Extending upwardly from the top of the receptacle 22 1s a bracket 33. Centrally pivoted to the upper portion of the bracket 33 is a bell crank 34. One arm of the bell crank 34 carries the downwardly extending stem 35 of a valve 36 adapted to coact with the seat 32. V i

On the stem 35 is a spring 36 adapted to engage the top of the receptacle 22, and one arm of the bell crank 34, as shown in Fig. 4, for normally holding the valve 36 away from the seat 32.

Suitably pivoted at one end is a rod 37 2 having one end secured to the other arm of the bell crank 34 as at 38. i

It will be seen that the parts are so arranged that when the receptacle 22 is in its raised position, as illustrated for instance in Figs. 1 and 4, the valve 36 will be held open when the rod 37 is in horizontal position.

lVhen the receptacle 22 is lowered, the bell crank 34 will be moved on its pivot for closing the valve 36. In other words when the receptacle 22 is raised the spring 36 will hold the valve 36 open. When, however, the receptacle 22 swings downwardly toward its lowered position the pivot point 33 of the bell crank 34 will be moved away from the point where the rod 37 is pivoted on the receptacle 16 and will'thus cause the lower arm of the bell crank to be swung downwardly with relation to the receptacle 22 for seating the valve" 36. Secured to the receptacle 22 are chains 39 and 40. The chain 39 is connected with a draft door 12 and the chain 40 is extended over guides 41 and connected with the check door 13, so that when the receptacle 22 is raised the check'door is closed and the draft door 12 is opened, whereas when the receptacle 22 is lowered, the door 12 is closed and the V door 13 is opened.

In the practical operation of the parts of the device just described, it will be seen that steam from the boiler may enter the receptacle 15 through the pipe 16*, and that water will collect in the receptacle 15 and will also flow into the receptacle 16.

Mounted in the top of the receptacle 16 is a plug 42 having extended through it an opening 41 formed at the lower end of which is a valve seat 43. When the ressuir'elin the boiler reachesa certain height, the Water in the receptacle 16 will be forced through the tubes 20 and 21 into the tiltthe furnace and opening the check door 13.

hen the pressure in the boiler goes down, the water will flow from the receptacle 22 back into the receptacle 16 and will return to the boiler by means of the bypass tube 44.

It will be seen that when the receptacle 22 is lowered, the air vent therein will be closed thereby preventing any further flow of water into the boiler room.

Mounted just rearwardly of the receptacle. 16 is a receptacle 45 which may be tubular. Communicating with the bottom of the receptacle 45 is a return pipe 46 leading to the boiler.

Communicating with the upper portion of the receptacle 45 is a pipe 47 which is the return pipe from the radiators or other parts of the heating system.

A tube 48 located above the level of the tube 47 connects the interiors of the receptaclcs 16 and-45.

The plug 42 has a hollow cylindrical extension 49 extending downwardly below the seat 43. Screwed into the extension 49 is a collar 50 in which is slidably mounted the stem 51 of a valve 52 designed to coact with thevalve seat 43. On the lower end of the stem 51 is a collar 53. Between the collar 53 and the collar 50 may be a spring 54 which normally holds the valve 52 unseated. The cylindrical extension 49 has passages 55, whereby the passage 41 through the plug 42 is in communication with the interior of the upper portion of the receptacle 16.

On the inner end of the tube 20 is a cam 56, shown in Fig. 3, so arranged that ordinarily it does not contact with the lower end of the stem 51, but when the receptacle 22 is in its lowered position, the tube 20 is rotated to cause the cam 56 to engage the lower end of the stem 51 for seating the valve 52.

Ordinarily return water from the radiators passes from the tube 47 into the receptacle 45 and thence through the tube 46 which will flow through the tube 48 into i the receptacle 16 and thence through the tubes'2Q and 21 into the receptacle 22 which will be lowered thereby shutting oil the draft through the furnaceandopening the checkdamper and simultaneously closing the valve 52, and thereby preventing any overflow of the return water.

On the receptacle 15 is a watergage 60.

I believe that I have provided an entirely new attachment for heating systems of this type, wherein the dampers are regulated not only by the pressure in the boiler but also in such a Way that the draft will be reduced in case the return flow from the radiators should be stopped for any reason.

Furthermore my device has the advantage of automatically preventing leakage from the receptacle 22 and any leakage from the return system.

I, of course, have not attempted to enumerate all the advantages of my improved damper regulator, and I realize that some changes may be made in the construction and arrangement of the parts thereof without departing from the essential features and purposes of my invention, and it is my intention to cover by my claims any modified forms of structure or use of me chanical equivalents which may be reasonably included within the scope of my claims.

I claim as my invention:

1. In a device of the class described, a pair of compartments, the lower ends of said compartments being in communication with each other, means for connecting the upper portion of one of said compartments with' the upper part of a boiler, a tube pivotally mounted on the wall of the other of said compartments at the upper portion thereof, and communicating with the interior of said other compartment, a receptacle on the free end of said tube communicating therewith, a counterbalance device for said tube and said receptacle, a return fluid receptacle having an intake opening near its upper end, and a discharge opening at its lower end, the upper portion of said second receptacle being in communication with the compartment which communicates directly with said pivoted tube, said last named compartment having an air vent, a valve seat adjacent to said air vent, a valve for coacting with said seat, and means actuated according to the move ment of said first receptacle for closing said valve.

2. In a device of the class described, a receptacle, a tube pivotally supported thereon and arranged in communication with the interior portion thereof, a second receptacle on said tube designed to be operatively connected with draft operating means of a furnace, a counter-balancing device on said tube, a third receptacle having its upper end de signed to be in communication with the return pipes of a vapor heating system, and its lower end in communication with a boiler, the upper ends of said first and third recep tacle being -in communication with each other, whereby said second receptacle will be lowered in case the free flow of return water through said first receptacle should be obstructed, said first receptacle having an air vent, a valve for controlling said air vent, and means for automatically closing said valve when said second receptacle is in its lowered position.

Des Moines, Iowa, October 26, 1917.

THOMAS CONNELL.

copies of this patent may he obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. G. 

